VW7.2
At the Cincom wiki is a page with a diagram that shows the colom types.
Here's my take without colom types but with a layout that tries to emphasize the structure: 
- the column 'trace' points back to the previous version of this record.
- the column tw_blessing.rectype holds 'B' or 'P' to associate it with the correct pundle table.
Questions: - the colom 'version' is defined in
tw_bundle/tw_package/tw_parcelrecord/tw_method
but not in
tw_classrecord/tw_namespacerecord/tw_dataelement
Why is tw_method with version instead of without?
- What is 'expressionid' used for in tw_bundles and tw_packages?
- tw_parcelrecord.pundleid is unused?
- need to look into what vanguardXX/rearguardXX fields in tw_bundle are used for.